CN105860356B - Octagonal cable protection pipe and preparation method thereof - Google Patents

Octagonal cable protection pipe and preparation method thereof Download PDF

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Publication number
CN105860356B
CN105860356B CN201610313709.6A CN201610313709A CN105860356B CN 105860356 B CN105860356 B CN 105860356B CN 201610313709 A CN201610313709 A CN 201610313709A CN 105860356 B CN105860356 B CN 105860356B
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parts
pvc
protection pipe
cable protection
powder
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CN105860356A (en
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葛介昌
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HANGZHOU JIETONG CABLE PROTECTION TUBE CO Ltd
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HANGZHOU JIETONG CABLE PROTECTION TUBE CO Ltd
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    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L27/00Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
    • C08L27/02Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L27/04Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
    • C08L27/06Homopolymers or copolymers of vinyl chloride
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2201/00Properties
    • C08L2201/02Flame or fire retardant/resistant
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2201/00Properties
    • C08L2201/04Antistatic
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2201/00Properties
    • C08L2201/08Stabilised against heat, light or radiation or oxydation
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2203/00Applications
    • C08L2203/20Applications use in electrical or conductive gadgets
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00Polymer mixtures characterised by other features
    • C08L2205/02Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
    • C08L2205/025Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00Polymer mixtures characterised by other features
    • C08L2205/03Polymer mixtures characterised by other features containing three or more polymers in a blend
    • C08L2205/035Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend

Abstract

Octagonal cable protection pipe and preparation method thereof, belongs to compound doses and preparation method thereof technical field, including:100 parts of PVC, 25 ~ 35 parts of filler, 15 ~ 20 parts of nm-class active calcium carbonate, 3 ~ 3.5 parts of stabilizer, 3.2 ~ 4.2 parts of lubricant, 6 ~ 10 parts of impact modifier, 0.4 ~ 0.8 part of toner;The lubricant is made of paraffin and stearic acid, by weight, paraffin:Stearic acid=0.7:3.The present invention uses polyvinyl chloride resin as primary raw material; through high temperature and pressure extrusion forming; shock resistance; high temperature resistant, resists cold, service life length; and while excellent fire-retardancy and insulation wear-resisting property is obtained; certain pliability is maintained, for the laying of underground communication pipeline, is played a protective role to communications optical cable, cable.

Description

Octagonal cable protection pipe and preparation method thereof
Technical field
The invention belongs to compound doses and preparation method thereof technical field, and in particular to for octagonal cable protection pipe and Its preparation method.
Background technology
With the high speed development of our telecommunications, the demand of cable protection pipe is increasing, and cable protection pipe is main For the perforating, isolation and protection of optical fiber, and telecom communication, cable TV signal, metropolitan area cable and power department cable, light Line laying etc., its quality requirement is very high, it is desirable to has highly corrosion resistant, high intensity, inner wall coefficient of friction is small, electrical insulating property is excellent Good, light-weight, the advantages that construction is convenient, and existing communication conduit quality is not fully up to expectations.
Traditional cable protection pipe, it using Corvic is major ingredient, powdered whiting for filler and chlorinated polyethylene to be The small powders such as alkene, paraffin are mixed, and it is wear-resisting light-weight, pollution-free etc. to possess certain corrosion-resistant, high temperature resistant, fire-retardant, insulation Characteristic.But its shortcoming is that compression strength is poor, there is gap with construction application requirement, its fire resistance is also not ideal enough;Separately Its outer vicat softening temperature is hovered at 90 DEG C or so, and inside and outside pipe friction coefficient is big etc., adds the difficulty of construction usage.
Therefore, it is necessary to a kind of octagonal cable protection pipe and preparation method thereof is researched and developed, to overcome the defects of mentioned above And deficiency.
The content of the invention
It is an object of the invention to overcome the defects of mentioned above and deficiency, and provide octagonal cable protection pipe.
Another object of the present invention is to provide the preparation method of above-mentioned octagonal cable protection pipe.
The present invention realizes that the technical solution that its purpose uses is as follows.
Octagonal cable protection pipe, in parts by weight, it includes:100 parts of PVC, 25 ~ 35 parts of filler, 15 ~ 20 parts Nm-class active calcium carbonate, 3 ~ 3.5 parts of stabilizer, 3.2 ~ 4.2 parts of lubricant, 6 ~ 10 parts of impact modifier, 0.4 ~ 0.8 part Toner;The lubricant is made of paraffin and stearic acid, by weight, paraffin:Stearic acid=0.7:3.
The PVC is made of PVC SG-5 and PVC SG-6, by weight, PVC SG-5:PVC SG-6=3:1.
The filler includes gas-phase silica, forging kaolin, medical stone powder and polytetrafluoroethylene (PTFE);By weight, gas Phase white carbon:Forge kaolin:Medical stone powder:Polytetrafluoroethylene (PTFE)=5:0.8:4.2:15.
The stabilizer is the compound stabilizer of lead sulfate tribasic, dibasic lead phosphite and lead stearate, by weight Measure ratio, lead sulfate tribasic:Dibasic lead phosphite:Lead stearate=1:1:1.
The impact modifier is CPE.
The toner is pigment scarlet powder and orange powder, by weight, pigment scarlet powder:Orange powder=1:1.
The preparation method of the filler is as follows:Ground after forging kaolin is mixed with medical stone powder, by 150 mesh sieves Powder is obtained after choosing;Above-mentioned powder is added into polytetrafluoroethylene (PTFE) together with gas-phase silica, when 115 DEG C of insulated and stirreds 1 are small, discharging After obtain filler.
The preparation method of octagonal cable protection pipe, comprises the following steps:
Step 1, PVC is heated to melting, and then adds stabilizer, and stirring at low speed is to 60 DEG C after mixing;
Step 2, the product that step 1 is obtained are added in high mixer, then add stearic acid and impact modifier simultaneously Mixing 15 ~ 20 minutes, temperature control is at 80 DEG C;
Step 3, then toward adding filler, paraffin and toner in high mixer and mix 15 ~ 20 minutes, temperature control 100 ~ 110℃;
Step 4, then mixes 6 ~ 8 minutes, temperature control is 90 ~ 100 toward addition nm-class active calcium carbonate in high mixer DEG C, it is granulated finally by double screw extruder, cool drying, after forming machine pulls out product, by cutting machine fixed length cutting, send Enter pipe-expanding machine, up to octagonal cable protection pipe after the completion of flaring.
The preparation method of the filler is as follows:Ground after forging kaolin is mixed with medical stone powder, by 150 mesh sieves Powder is obtained after choosing;Above-mentioned powder is added into polytetrafluoroethylene (PTFE) together with gas-phase silica, when 115 DEG C of insulated and stirreds 1 are small, discharging After obtain filler.
5 type of PVC polyvinyl chloride, i.e. PVC SG-5.SG represents the polyvinyl chloride resin of suspension method production, generally divides 1 ~ 8 type, also It is SG1 ~ SG8, SG1 types molecular weight is maximum, and SG8 types molecular weight is minimum.PVC SG-5, its viscosity number are 117-107, average degree of polymerization For 1150-1000, profile shapes, hard tube, transparent and other boardy products are applied in general to.
6 type of PVC polyvinyl chloride, i.e. PVC SG-6.PVC SG-6, its viscosity number are 106-96, average degree of polymerization 950- 850, apply in general to slide, hardboard, disc, fiber.
Filler:Gas-phase silica, forging kaolin, medical stone powder, polytetrafluoroethylene (PTFE).Gas-phase silica due to its particle diameter very Small, therefore specific surface area is big, superficial attractive forces are strong, and surface energy is big, and chemical purity is high, dispersion performance is good, thermal resistance, resistance etc. With special performance.Kaolin is forged, its structure is Al2O3(SiO2)2H2O, plasticity and associativity are strong, and good insulating is resistance to Fiery degree is high.Medical stone powder is to be crushed by screening by medical stone raw ore, be classified the powder being process.This filler is to synthesis Lift antistatic property and heat resistance.
Nm-class active calcium carbonate, is modified PVC, cable protection pipe is had good intensity, elasticity, pliability And fatigue resistance.
Stabilizer, the compound stabilizer of three salt, disalt and lead stearate.Three salt(Lead sulfate tribasic), disalt(Dibasic Lead phosphite), improve the heat endurance and electrical insulating property of product, lead stearate(CdSt), there is synergistic effect with phosphite ester, The long-term thermal stability of tubing is remarkably improved, it is of low cost.
Paraffin and stearic acid, as lubricant, for reducing melt viscosity and improving the metal-stripping of melt, so as to prolong The stability of long tubing and processing and forming time.Paraffin and stearic addition, can reduce the viscosity of resin, improve molten metal Fissility, reduces extrusion load and reduces intermolecular force, however, on the other hand, can also reduce the heat resistance of resin, it is necessary to Control adds the dosage of lubricant.
CPE, as impact modifier, to improve the low temperature brittleness of resin, assigns the toughness of its higher.
Toner, according to requirement of the GB2479-2005 standards to color, using commercially available pigment scarlet powder
With orange powder.
The present invention uses PVC resins as primary raw material, and through high temperature and pressure extrusion forming, shock resistance, high temperature resistant, resists cold, Service life is grown, and while excellent fire-retardancy and insulation wear-resisting property is obtained, is maintained certain pliability, used In the laying of underground communication pipeline, play a protective role to communications optical cable, cable.
The present invention with the addition of gas-phase silica, forging kaolin, medical stone powder, and insulating properties and fire resisting is greatly improved Degree, meanwhile, the PVC is made of PVC SG-5 and PVC SG-6, the addition of PVC SG-6 and nm-class active calcium carbonate etc. It not only stable for the toughness of product, also further improve the elongation of product so that product possesses beneficial comprehensive performance, and And its excellent antistatic property and heat resistance so that product being capable of protection circuit in a fire.
Embodiment
The present invention is described in further detail below.
Embodiment one.
Octagonal cable protection pipe, in parts by weight, it includes:
100 parts of PVC,
25 parts of filler,
20 parts of nm-class active calcium carbonate,
3 parts of stabilizer,
4.2 parts of lubricant,
6 parts of impact modifier,
0.8 part of toner.
The lubricant is made of paraffin and stearic acid, by weight, paraffin:Stearic acid=0.7:3.
The PVC is made of PVC SG-5 and PVC SG-6, by weight, PVC SG-5:PVC SG-6=3:1.
The filler includes gas-phase silica, forging kaolin, medical stone powder and polytetrafluoroethylene (PTFE);By weight, gas Phase white carbon:Forge kaolin:Medical stone powder:Polytetrafluoroethylene (PTFE)=5:0.8:4.2:15.The preparation method of the filler is such as Under:Ground after forging kaolin is mixed with medical stone powder, powder is obtained after the choosing of 150 mesh sieves;Above-mentioned powder and gas phase is white Carbon black adds polytetrafluoroethylene (PTFE) together, and when 115 DEG C of insulated and stirreds 1 are small, filler is obtained after discharging.
The stabilizer is the compound stabilizer of lead sulfate tribasic, dibasic lead phosphite and lead stearate, by weight Measure ratio, lead sulfate tribasic:Dibasic lead phosphite:Lead stearate=1:1:1.
The impact modifier is CPE.
The toner is pigment scarlet powder and orange powder, by weight, pigment scarlet powder:Orange powder=1:1.
A kind of preparation method of octagonal cable protection pipe, comprises the following steps:
Step 1, PVC is heated to melting, and then adds stabilizer, and stirring at low speed is to 60 DEG C after mixing;
Step 2, the product that step 1 is obtained are added in high mixer, then add stearic acid and impact modifier simultaneously Mixing 15 ~ 20 minutes, temperature control is at 80 DEG C;
Step 3, then toward adding filler, paraffin and toner in high mixer and mix 15 ~ 20 minutes, temperature control 100 ~ 110℃;
Step 4, then mixes 6 ~ 8 minutes, temperature control is 90 ~ 100 toward addition nm-class active calcium carbonate in high mixer DEG C, it is granulated finally by double screw extruder, cool drying, after forming machine pulls out product, by cutting machine fixed length cutting, send Enter pipe-expanding machine, up to octagonal cable protection pipe after the completion of flaring.
Embodiment two.
Octagonal cable protection pipe, in parts by weight, it includes:
100 parts of PVC,
35 parts of filler,
15 parts of nm-class active calcium carbonate,
3.5 parts of stabilizer,
3.2 parts of lubricant,
10 parts of impact modifier,
0.4 part of toner.
In the present embodiment, remaining technical characteristic is identical with embodiment one, repeats no more.
Embodiment three.
Octagonal cable protection pipe, in parts by weight, it includes:
100 parts of PVC,
30 parts of filler,
17 parts of nm-class active calcium carbonate,
3.3 parts of stabilizer,
3.7 parts of lubricant,
8 parts of impact modifier,
0.6 part of toner.
In the present embodiment, remaining technical characteristic is identical with embodiment one, repeats no more.
Table one is common cable protection pipe and the performance table of comparisons of cable protection pipe of the present invention
Performance indicator Common cable protection pipe Cable protection pipe of the present invention
Tensile strength > 10MPa > 18MPa
Tensile strength after aging(158 DEG C, 168h) > 6.5MPa > 12.5MPa
Elongation > 100% > 320%
Elongation after aging(158 DEG C, 168h) > 70% > 243%
20 DEG C of sheet resistances(Ω) 5.0×1012 3.2×1015
Clod wash - 10 ± 2 DEG C, 4h, does not crack - 10 ± 2 DEG C, 4h, does not crack
For this tubing, 80 DEG C of ring stiffness >=8KPa.In experiment is flattened, sample vertical direction deflection is loaded onto as original Internal diameter 30% when, sample occurs without crack or rupture.Drop impact(4.00Kg、1200mm), there is not crack or broken in sample Split.Vicat softening temperature >=126 DEG C.
Product of the present invention have high temperature resistant and anti-aging property it is good, adapt to power cable using process because of overload short circuit and The high temperature of generation, material have high insulation resistance and volume resistivity;Flexible and compression strength is big, anti-differential settlement, Construction site need not encapsulating pouring concrete;Inner wall surface coefficient of friction is small, beneficial to use, life of product length.
The present invention is illustrated according to embodiment, on the premise of present principles are not departed from, if the present apparatus can also make Dry modification and improvement.It should be pointed out that all technical solutions obtained using modes such as equivalent substitution or equivalent transformations, all fall within this In the protection domain of invention.

Claims (5)

1. octagonal cable protection pipe, it is characterised in that in parts by weight, it includes:100 parts of PVC, 25 ~ 35 parts of filler, 15 ~ 20 parts of nm-class active calcium carbonate, 3 ~ 3.5 parts of stabilizer, 3.2 ~ 4.2 parts of lubricant, 6 ~ 10 parts of impact modifier, 0.4 ~ 0.8 part of toner;The lubricant is made of paraffin and stearic acid, by weight, paraffin:Stearic acid=0.7:3;
The filler includes gas-phase silica, forging kaolin, medical stone powder and polytetrafluoroethylene (PTFE);By weight, gas phase is white Carbon black:Forge kaolin:Medical stone powder:Polytetrafluoroethylene (PTFE)=5:0.8:4.2:15;
The preparation method of above-mentioned octagonal cable protection pipe, comprises the following steps:
Step 1, PVC is heated to melting, and then adds stabilizer, and stirring at low speed is to 60 DEG C after mixing;
Step 2, the product that step 1 is obtained are added in high mixer, are then added stearic acid and impact modifier and are mixed 15 ~ 20 minutes, temperature control was at 80 DEG C;
Step 3, then toward addition filler, paraffin and toner in high mixer and mix 15 ~ 20 minutes, temperature control is 100 ~ 110 ℃;
Step 4, then mixes 6 ~ 8 minutes, temperature control is at 90 ~ 100 DEG C, most toward addition nm-class active calcium carbonate in high mixer It is granulated afterwards by double screw extruder, cool drying, after forming machine pulls out product, by cutting machine fixed length cutting, is sent into and expands Mouth machine, up to octagonal cable protection pipe after the completion of flaring;
The preparation method of the filler is as follows:Ground after forging kaolin is mixed with medical stone powder, after the choosing of 150 mesh sieves Obtain powder;Above-mentioned powder is added into polytetrafluoroethylene (PTFE) together with gas-phase silica, when 115 DEG C of insulated and stirreds 1 are small, after discharging To filler.
2. octagonal cable protection pipe as claimed in claim 1, it is characterised in that the PVC is by PVC SG-5 and PVC SG-6 is formed, by weight, PVC SG-5:PVC SG-6=3:1.
3. octagonal cable protection pipe as claimed in claim 1, it is characterised in that the stabilizer is tribasic sulfuric acid The compound stabilizer of lead, dibasic lead phosphite and lead stearate, by weight, lead sulfate tribasic:Dibasic lead phosphite: Lead stearate=1:1:1.
4. octagonal cable protection pipe as claimed in claim 1, it is characterised in that the impact modifier is CPE.
5. octagonal cable protection pipe as claimed in claim 1, it is characterised in that the toner is pigment scarlet powder and orange Powder, by weight, pigment scarlet powder:Orange powder=1:1.
CN201610313709.6A 2016-05-12 2016-05-12 Octagonal cable protection pipe and preparation method thereof Active CN105860356B (en)

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Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109535598A (en) * 2018-11-27 2019-03-29 杭州介通电缆保护管有限公司 Power cable communicates protection pipe
CN115232415A (en) * 2022-07-28 2022-10-25 苏州国宇碳纤维科技有限公司 HPVC modified material for protective tube and preparation method of HPVC cable protective tube

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103524946A (en) * 2013-10-17 2014-01-22 宁波一舟塑胶有限公司 High-temperature-resistant thermoplastic polyvinyl chloride cable material and preparation method thereof
CN104710712A (en) * 2015-03-26 2015-06-17 湖州科达化工燃料有限公司 Novel PVC-U tubular product and preparation method thereof
CN104829968A (en) * 2015-05-11 2015-08-12 杭州介通电缆保护管有限公司 Communication cable protecting tube and preparation method thereof

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103524946A (en) * 2013-10-17 2014-01-22 宁波一舟塑胶有限公司 High-temperature-resistant thermoplastic polyvinyl chloride cable material and preparation method thereof
CN104710712A (en) * 2015-03-26 2015-06-17 湖州科达化工燃料有限公司 Novel PVC-U tubular product and preparation method thereof
CN104829968A (en) * 2015-05-11 2015-08-12 杭州介通电缆保护管有限公司 Communication cable protecting tube and preparation method thereof

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